Abstract: The greenhouse control theory is now facing a new breakthrough, with intelligent control technique being a new development of it. Based on observations on recent research achievements and international development trends of greenhouse intelligent control systems(GICS), this paper analyzed the features and structures of GICS, summarized the present research situations of GICS, presented further discussions about some relevant problems, put forward some suggestions for the future applied research in GICS including seeking further theoretical guidance in fundamental academic exploration and practical process evaluation. The possible future study orientation of GICS was also given in this paper.